raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:79350

3-phosphoserine phosphatase deficiency, infantile/juvenile form

Synonyms: PSPH deficiency, infantile/juvenile form

Type
Etiological subtype
Group
Subtype of disorder
Inheritance
Autosomal recessive
Age of onset
Infancy
Status
active

3-Phosphoserine phosphatase deficiency is an extremely rare form of serine deficiency syndrome characterized clinically by congenital microcephaly and severe psychomotor retardation in the single reported case to date, which was associated with Williams syndrome.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
en3-phosphoserine phosphatase deficiency, infantile/juvenile formPSPH deficiency, infantile/juvenile form
frDéficit en 3-phosphosérine phosphatase, forme infantile/juvénileDéficit en PSPH, forme infantile/juvénile
de3-Phosphoserin-Phosphatase-Mangel, infantile/juvenile FormPSPH-Defizienz, infantile/juvenile Form
esDeficiencia de 3-fosfoserina fosfatasa, forma infantil/juvenilDeficiencia de PSPH, forma infantil/juvenil
itDeficit di 3-fosfoserina-fosfotasi
nlDeficiëntie van 3-fosfoserinefosfatase, infantiele/juveniele vormPSPH-deficiëntie, infantiele/juveniele vorm
ptDeficiência de 3-fosfoserina fosfatase, forma da infância/juvenil
plNiedobór fosfatazy 3-fosfoseryny= en
csDeficit 3-fosfoserinfosfatázy= en
ukДефіцит 3-фосфосеринфосфатази, інфантильна/ювенільна формаДефіцит PSPH, інфантильна/ювенільна форма
zh3-磷酸丝氨酸磷酸化酶缺陷症,婴儿/青少年型PSPH缺乏症,婴儿/青少年型
tr3-fosfoserin fosfataz eksikliği, infantil / jüvenil formuPSPH eksikliği, infantil/jüvenil formu

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM614023Evalidated
ICD-10E72.8NTBTattributedvalidated
ICD-115C50.6NTBTattributedvalidated
MONDO0013531Evalidated
UMLSC1291463Evalidated

E exact · NTBT this ORPHAcode is narrower than the target · BTNT broader than the target · ND not decided.

3

Classification

Preferential parent (Orphanet linearisation):

Parents in the classifications (1):

No children.

4

Genes

1 direct
GeneAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
PSPHDisease-causing germline mutation(s) inAssessedHGNC:9577ENSG000001467331724807p11.2phosphoserine phosphatase14673469[PMID]
5

Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Cases/families8 casesWorldwideCase(s)Validated9222972[PMID]_14673469[PMID]
Point prevalence<1 / 1 000 000—WorldwideClass onlyValidatedORPHANET_9222972[PMID]_14673469[PMID]

Value is Orphadata's ValMoy: the mean estimate per 100 000 for prevalence and incidence, the number of cases or families for case reports.

6

HPO phenotypes

18 annotations · validated 2019-03-28
HPOTerm (as annotated by Orphanet)Diagnostic
Frequent (79-30%)
HP:0011968Feeding difficulties
HP:0001263Global developmental delay
HP:0012279Hyposerinemia
HP:0002342Intellectual disability, moderate
HP:0008897Postnatal growth retardation
Occasional (29-5%)
HP:0001999Abnormal facial shape
HP:0002069Bilateral tonic-clonic seizure
HP:0000337Broad forehead
HP:0100633Esophagitis
HP:0000293Full cheeks
HP:0002020Gastroesophageal reflux
HP:0001276Hypertonia
HP:0000047Hypospadias
HP:0000252Microcephaly
HP:0000347Micrognathia
HP:0000341Narrow forehead
HP:0100540Palpebral edema
HP:0000154Wide mouth

Annotation source: 28653176[PMID]_19963421[PMID]_8739971[PMID]_16763900[PMID]_25080166[PMID]_9222972[PMID]

7

Sources for this card